US5700972A - Gas cartridge - Google Patents

Gas cartridge Download PDF

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Publication number
US5700972A
US5700972A US08/596,303 US59630396A US5700972A US 5700972 A US5700972 A US 5700972A US 59630396 A US59630396 A US 59630396A US 5700972 A US5700972 A US 5700972A
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US
United States
Prior art keywords
sleeve
cartridge
gas
expansion chamber
chamber
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
US08/596,303
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English (en)
Inventor
Michael Ernest Saxby
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Constantia International Ltd
Original Assignee
Constantia International Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Constantia International Ltd filed Critical Constantia International Ltd
Assigned to CONSTANTIA (INTERNATIONAL) LIMITED reassignment CONSTANTIA (INTERNATIONAL) LIMITED ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SAXBY, MICHAEL ERNEST
Application granted granted Critical
Publication of US5700972A publication Critical patent/US5700972A/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B8/00—Practice or training ammunition
    • F42B8/02—Cartridges
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41B—WEAPONS FOR PROJECTING MISSILES WITHOUT USE OF EXPLOSIVE OR COMBUSTIBLE PROPELLANT CHARGE; WEAPONS NOT OTHERWISE PROVIDED FOR
    • F41B11/00—Compressed-gas guns, e.g. air guns; Steam guns
    • F41B11/60—Compressed-gas guns, e.g. air guns; Steam guns characterised by the supply of compressed gas
    • F41B11/62—Compressed-gas guns, e.g. air guns; Steam guns characterised by the supply of compressed gas with pressure supplied by a gas cartridge
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41B—WEAPONS FOR PROJECTING MISSILES WITHOUT USE OF EXPLOSIVE OR COMBUSTIBLE PROPELLANT CHARGE; WEAPONS NOT OTHERWISE PROVIDED FOR
    • F41B11/00—Compressed-gas guns, e.g. air guns; Steam guns
    • F41B11/70—Details not provided for in F41B11/50 or F41B11/60
    • F41B11/72—Valves; Arrangement of valves
    • F41B11/721—Valves; Arrangement of valves for controlling gas pressure for both firing the projectile and for loading or feeding
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B6/00—Projectiles or missiles specially adapted for projection without use of explosive or combustible propellant charge, e.g. for blow guns, bows or crossbows, hand-held spring or air guns
    • F42B6/10—Air gun pellets ; Ammunition for air guns, e.g. propellant-gas containers

Definitions

  • the present invention relates to pressurised gas cartridges of the type which may be used in place of conventional pyrotechnic cartridges.
  • Pressurised gas cartridges are known, one example being that disclosed in European Patent specification EP-A-499332, to which reference should be made.
  • a disadvantage of the known types of gas cartridges is that they are incapable of generating sufficient rearward force to actuate recoil-operated automatic and semi-automatic weapons. Such weapons depend upon the breech block being moved rearwardly under force applied to it upon firing of a round of ammunition in order to set in train the reloading and recocking cycle.
  • a gas cartridge should have a first part which is displaced on firing relative to a second part, so as to apply the necessary force to the breech block to recycle the weapon.
  • gas used to eject a projectile from the cartridge disclosed in the above mentioned specification is admitted to an expansion chamber prior to being used to eject the projectile, where it acts on the rearwardly movable part.
  • the cartridge case is of telescopic construction and has a sleeve which is slidably mounted on a body housing the gas chambers and operating parts.
  • the sleeve may have a forward end wall which overlies the forward end wall of the body, and the expansion chamber is defined between the two end walls.
  • the pressure of gas in the expansion chamber acts on the end wall of the body and drives the body rearwardly in the manner of a piston.
  • the sleeve is held in place by engagement with the wall of the chamber of the weapon.
  • the gas is subsequently discharged from the expansion chamber and used to eject the bullet or other projectile.
  • the moment at which the gas is discharged from the expansion chamber is preferably determined by the sleeve and body entering predetermined relative positions.
  • the body may have an axially extending spigot which normally projects into and obturates an aperture in the end wall of the sleeve.
  • the relative movement between the sleeve and body leads to the spigot being progressively withdrawn from the aperture until, in the predetermined relative positions, the spigot is withdrawn from the aperture and the gas from the expansion chamber exhausts through it.
  • the bullet or other projectile may be held in place to the rim of the sleeve in a conventional way, it may alternatively be fitted to the spigot from which it is released at the instant the pressurised gas is applied to the projectile.
  • Other arrangements for causing a part of a cartridge to be displaced rearwardly may be used in place of that described above.
  • FIG. 1 is a longitudinal section through a pressurised gas cartridge in its charged state prior to firing
  • FIG. 2 shows the parts in their relative positions shortly after firing
  • FIG. 3 shows the parts in their relative positions at the end of the firing sequence
  • FIG. 4 is a schematic longitudinal cross-section through a portion of a weapon loaded with a gas cartridge according to the present invention.
  • the cartridge proposed herein has a two-part case formed from a body 10 and a sleeve 14 mounted telescopically on the body.
  • a projectile "P” is disposed at the forward end of the cartridge.
  • the cartridge is loaded into the chamber "C" of a conventional gun having a barrel “A”, breech block “B” and firing pin “F", all shown in FIG. 4.
  • the sleeve has a radially inwardly extending wall 16 at its forward end which bounds an aperture 53. Because the cylindrical portion of the sleeve is not under any gas pressure it may have a relatively thin wall.
  • the body is provided at its forward end with an external annular shoulder 54 arranged to cooperate with an internal shoulder 54' at the rearward end of the sleeve in order to limit relative movement of the two parts.
  • An O-ring 55 seals the body to the sleeve at their forward ends.
  • the body has a radially inwardly extending front wall 33 at its forward end which in the charged state is in close contact with the end wall of the sleeve.
  • An axial spigot 51 projects from the wall 33 and is a sliding fit in the aperture 53.
  • the spigot functions as a slide valve and normally closes the aperture 53.
  • a cavity 35 in the inner side of the wall 33 has a cylindrical portion which serves as a seat for the head 36 of a piston valve having a stem 13.
  • the end wall of the cavity is conical in shape and formed with ports 34 opening into an annular V-sectioned groove in the outer surface of the end wall 33.
  • the groove 60 forms a part of an expansion chamber to be described later.
  • the valve head 36 is formed with a pair of collars 31, 32 defining a groove which receives an O-ring sealing the valve head against the cavity.
  • An insert 11 is screwed into the rearward end of the body and is sealed relative to the body by an O-ring 15.
  • the insert has a cylindrical extension which defines a bore 20 which guides a skirt portion 57 at the rearward end of the stem 13.
  • a primary gas chamber 21 surrounding the piston valve contains a gas, conveniently air, under a pressure which is preferably at least 50 bar (5 ⁇ 10 7 Pa) and more preferably substantially 200 bar (2 ⁇ 10 7 Pa).
  • the body and sleeve are in their closed positions with the two end walls juxtaposed.
  • the piston valve Upon the cartridge being fired, the piston valve is moved rearwardly, initially into the position shown in FIG. 2.
  • the valve head 36 is therefore withdrawn from the cavity 35 and frees the ports 34.
  • Gas from the primary chamber escapes into the groove 60 and causes the body to begin its rearward movement relative to the sleeve.
  • This movement begins the enlargement of an expansion chamber 61 which continues to enlarge as rearward movement of the body continues.
  • Gas is prevented from escaping between the body and sleeve by the O-ring 55.
  • the spigot slides back through the aperture 53 until eventually it is withdrawn completely therefrom into the position shown in FIG. 3.
  • the air from the expansion chamber now escapes through the aperture 53 and ejects the projectile "P" carried by the cartridge.
  • the projectile "P” may be held in place by a lip on the rim of the wall 16, or may be provided with a socket “S" which receives the spigot 51.
  • the body and sleeve are in their closed positions with the two end walls juxtaposed.
  • a relief valve which comprises a spool member supported within the skirt 57 of the piston valve.
  • the spool member has a central body portion 12 and forward and rearward shoulders 42, 43 defining grooves for receiving O-rings 40, 41.
  • a stem portion 45 extends rearwardly from the shoulder 43 and is located within a relief passage 23.
  • Frusto-conical valve seats 44 in the relief passage 23 are contacted by a complementary portion of the rearward shoulder and by the rearward O-ring.
  • the forward O-ring 40 is sealed against the bore within the skirt 57.
  • a compression spring 50 applies a relatively weak pressure to the spool member.
  • Two chambers are thereby formed, namely a secondary chamber 22 located between the end of the skirt 57 and the seal ring 41 and third chamber 47 located within the skirt 57 forwardly of the shoulder 42.
  • the chamber 22 is in communication with the primary chamber 21 through a bleed passage 24 existing between the skirt and the bore 20, so that in the charged state the pressures within the chambers 21 and 22 are equalised.
  • a duct 46 extends through the spool member to connect the chamber 47 to a vent in the peripheral surface of the stem portion, whereby the chamber 47 is at atmospheric pressure.
  • Gas in the chamber 22 vents to atmosphere through the relief passage. Although some gas flows through the bleed passage 24 from chamber 21, this flow is negligible and does not prevent the pressure in the chamber 22 falling sharply.
  • the gas in chamber 21 applies pressure to the forward surface of the skirt 57 which greatly overcomes that applied by gas in chamber 22 to the rearward rim of the skirt, and the piston valve tends to move rearwards, as discussed above. Because chamber 47 is at atmospheric pressure and able to vent through duct 46, the spool member is drawn into the skirt, thereby allowing the piston valve to move towards the position shown in FIG. 3.
  • the time at which gas is released and the projectile discharged may be adjusted relative to the rearward motion of the body.
  • a cartridge in accordance with the invention has the advantage over pyrotechnic cartridges that it is reusable. It is therefore very suitable for use as training ammunition, particularly for semi-automatic pistols and other recoil-operated weapons.
  • the cartridge may also be particularly suitable for use in paint-ball guns, because the ball may be adapted easily to fit on the spigot 51.
  • the cartridge has been described as being used to eject a projectile, it will be appreciated that it may be used as a "blank" without a projectile but will still be capable of applying force to the breech block "B".
  • valve arrangements may be made to the cartridge described herein within the scope of the invention.
  • other types of valve arrangements may be employed to admit gas to the expansion chamber in response to the cartridge being struck by the firing pin, and other valve arrangements may be used to discharge gas from the expansion chamber and the desired instant.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Feeding And Controlling Fuel (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Toys (AREA)
  • Safety Valves (AREA)
  • Portable Nailing Machines And Staplers (AREA)
US08/596,303 1993-08-16 1994-08-15 Gas cartridge Expired - Fee Related US5700972A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB9317040 1993-08-16
GB9317040A GB2281118B (en) 1993-08-16 1993-08-16 Gas cartridge
PCT/GB1994/001779 WO1995005573A1 (en) 1993-08-16 1994-08-15 Gas cartridge

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US08/942,983 Continuation US5962805A (en) 1993-08-16 1997-10-02 Gas cartridge

Publications (1)

Publication Number Publication Date
US5700972A true US5700972A (en) 1997-12-23

Family

ID=10740586

Family Applications (2)

Application Number Title Priority Date Filing Date
US08/596,303 Expired - Fee Related US5700972A (en) 1993-08-16 1994-08-15 Gas cartridge
US08/942,983 Expired - Fee Related US5962805A (en) 1993-08-16 1997-10-02 Gas cartridge

Family Applications After (1)

Application Number Title Priority Date Filing Date
US08/942,983 Expired - Fee Related US5962805A (en) 1993-08-16 1997-10-02 Gas cartridge

Country Status (15)

Country Link
US (2) US5700972A (el)
EP (1) EP0775288B1 (el)
JP (1) JPH10503275A (el)
CN (1) CN1043925C (el)
AT (1) ATE185898T1 (el)
AU (1) AU682708B2 (el)
CA (1) CA2169565C (el)
DE (1) DE69421295T2 (el)
ES (1) ES2137374T3 (el)
GB (1) GB2281118B (el)
GR (1) GR3031576T3 (el)
HK (1) HK1012701A1 (el)
RU (1) RU2134399C1 (el)
WO (1) WO1995005573A1 (el)
ZA (1) ZA946159B (el)

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5962805A (en) * 1993-08-16 1999-10-05 Constantia (International) Limited Gas cartridge
WO2000009965A1 (en) * 1998-08-13 2000-02-24 Lambeth Properties Limited Self loading gun cartridge
WO2000016032A1 (en) * 1998-09-14 2000-03-23 Lambeth Properties Limited Blank cartridge for self loading guns
WO2001016550A1 (en) * 1999-08-27 2001-03-08 Lambeth Properties Limited Training cartridge for a self loading gun
US6422149B1 (en) * 1999-08-27 2002-07-23 Lambath Properties Limited Blank training cartridge for a self loading gun
US6860207B1 (en) * 2003-08-22 2005-03-01 Thomas W. Robertson Compressible shot shell
US20050257783A1 (en) * 2004-05-19 2005-11-24 Tippmann Dennis J Jr Valve arrangement
US20060011184A1 (en) * 2004-06-18 2006-01-19 Npf Limited Air balanced exhaust poppet valve with bias closure
US7059316B1 (en) * 2005-03-08 2006-06-13 Jui-Fu Tseng Paintball shooting structure for a paintball gun
US20090194087A1 (en) * 2008-02-04 2009-08-06 Hsin-Hung Lin High-pressure pneumatic apparatus
US20090301459A1 (en) * 2008-06-04 2009-12-10 Yao-Gwo Gan Valve for paint ball guns
US20100170492A1 (en) * 2000-04-03 2010-07-08 Tiberius Benjamin T Semi-automatic firing compressed-gas gun
US8256406B1 (en) * 2011-06-01 2012-09-04 Kevin Kirkpatrick Systems and methods for regulating pneumatic gas propulsion
US20120304975A1 (en) * 2011-05-30 2012-12-06 Chor-Ming Ma Toy Gun Compressed Air Firing Shell
US8365669B1 (en) * 2011-08-24 2013-02-05 Utm Ip Limited Training cartridge
US8763596B2 (en) * 2012-03-01 2014-07-01 Aps Ltd. Cartridge for launching a bullet
US20150241165A1 (en) * 2014-02-21 2015-08-27 Air Ordnance Llc Fluid cartridge powered pellet gun
US9420778B1 (en) 2013-09-30 2016-08-23 Tiberius Technology, Llc Noise-making apparatus and method
US9700779B1 (en) * 2016-08-15 2017-07-11 Jose Leal Football throwing apparatus
US11262156B2 (en) * 2019-06-17 2022-03-01 Carl E Caudle Air gun for conventional metal-jacket bullets
US20220146238A1 (en) * 2020-11-12 2022-05-12 General Dynamics OTS - Canada, Inc. Reduced-energy cartridge with exterior sealing member for fluted chamber

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9705363D0 (en) * 1997-03-14 1997-04-30 Pyrotech Munitions Limited Improvements relating to pyrotechnic ammunition
GB2343240A (en) 1998-10-26 2000-05-03 Michael Ernest Saxby Projectiles
GB2346201A (en) 1999-02-01 2000-08-02 Michael Ernest Saxby Marker projectile
US6564719B2 (en) 1999-08-27 2003-05-20 Lambeth Properties Limited Training cartridge for a self loading gun
SE0001588D0 (sv) * 2000-04-27 2000-04-27 Comtri Ab Granatpatron
US6644295B2 (en) * 2001-07-03 2003-11-11 Smart Parts, Inc. Pneumatic assembly for a paintball gun
FR2838074B1 (fr) * 2002-04-08 2004-09-17 Prospection & Inventions Raccord monobloc pour appareil de fixation a gaz comprime et cartouche de gaz comprime
DE20208287U1 (de) * 2002-05-28 2002-09-05 Hans Eichner Gmbh & Co Kg Druckgas-Schussvorrichtung
KR100448003B1 (ko) * 2002-08-14 2004-09-13 국방과학연구소 기체포 발사 시스템
US6857423B2 (en) * 2003-02-11 2005-02-22 Paul Garfield Jong Paintball marker and kit of parts therefor
US7147466B1 (en) 2003-10-24 2006-12-12 Dentsply International, Inc. Pressure indicator gel system and method therefore
FR2884896B1 (fr) * 2005-04-26 2007-06-29 Prospection Et D Inv S Techniq Raccord d'etancheite et ensemble d'un organe de transmission, d'une cartouche de gaz et d'un adaptateur comprenant le raccord
US20070181114A1 (en) * 2006-02-07 2007-08-09 Tippmann Dennis J Jr Combination non-lethal projectile launcher and flash light
EP2099587B1 (en) * 2006-11-09 2016-02-10 Stanely Fastening Systems, L.P. Cordless fastener driving device
US7654256B2 (en) * 2008-01-16 2010-02-02 Mu-Sung Huang Apparatus for rapid loading and firing paintballs
US8430086B2 (en) * 2009-10-22 2013-04-30 Tippmann Sports, Llc Non-lethal pistol
RU2463541C2 (ru) * 2010-11-30 2012-10-10 Алексей Валентинович Тимошенко Автоматический пневматический маркер для игры "пейнтбол" с клапаном бесконтактного запирания подачи газа
DE102011104815B4 (de) * 2011-06-18 2014-01-16 Diehl Bgt Defence Gmbh & Co. Kg Manöverpatrone
CN103499235B (zh) * 2013-09-17 2015-06-10 中国船舶重工集团公司第七一〇研究所 气动式发射装置
FR3128283B1 (fr) * 2021-10-14 2023-09-29 Cybergun Munition
CN116164591A (zh) * 2022-09-07 2023-05-26 福建富兴工业彩弹枪有限公司 气动抛掷训练器

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US387256A (en) * 1888-08-07 pratt
US2327653A (en) * 1941-04-23 1943-08-24 Lisle Elmer Pneumatic cartridge and gun
FR2369537A1 (fr) * 1976-10-28 1978-05-26 Hilvenna Ltd Element-cartouche pour armes legeres
DE2822624A1 (de) * 1977-06-14 1978-12-21 France Etat Uebungspatrone fuer automatische feuerwaffen
FR2403536A1 (fr) * 1977-09-19 1979-04-13 Hilvenna Ltd Perfectionnements apportes aux munitions pour petites armes
GB2116681A (en) * 1982-02-27 1983-09-28 Hilvenna Ltd Air guns and ammunition for air guns
US4531458A (en) * 1982-07-29 1985-07-30 Hilvenna Limited Compressed gas powered ammunition for small arms
GB2153983A (en) * 1982-02-27 1985-08-29 Hilvenna Ltd Ammunition for air guns
GB2154714A (en) * 1984-02-14 1985-09-11 Hilvenna Ltd Cartridge ammunition for small arms
EP0189974A2 (en) * 1985-01-11 1986-08-06 Brocock Limited Improvements in or relating to compressed gas powered ammunition for guns
GB2211588A (en) * 1987-10-23 1989-07-05 Bubb Anthony John Allen Air guns
EP0499332A1 (en) * 1991-02-14 1992-08-19 Proprietaries Ltd. Stylobate A pressurized gas cartridge ammunition
US5492063A (en) * 1990-03-22 1996-02-20 Snc Industrial Technologies Inc. Reduced energy cartridge

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US4686905A (en) * 1985-07-26 1987-08-18 Attila Szabo Cartridge for frangible projectile
DE4131285C2 (de) * 1991-09-20 1997-05-28 Rheinmetall Ind Ag Anzünderbuchse für eine Treibladung
DE4240273A1 (de) * 1992-12-01 1994-06-09 Dynamit Nobel Ag Treibladungsanzünder
GB2281118B (en) * 1993-08-16 1997-06-18 Stylobate Proprietaries Limite Gas cartridge

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Publication number Priority date Publication date Assignee Title
US387256A (en) * 1888-08-07 pratt
US2327653A (en) * 1941-04-23 1943-08-24 Lisle Elmer Pneumatic cartridge and gun
FR2369537A1 (fr) * 1976-10-28 1978-05-26 Hilvenna Ltd Element-cartouche pour armes legeres
DE2822624A1 (de) * 1977-06-14 1978-12-21 France Etat Uebungspatrone fuer automatische feuerwaffen
FR2403536A1 (fr) * 1977-09-19 1979-04-13 Hilvenna Ltd Perfectionnements apportes aux munitions pour petites armes
GB1601918A (en) * 1977-09-19 1981-11-04 Hilvenna Ltd Ammunition for small arms
GB2116681A (en) * 1982-02-27 1983-09-28 Hilvenna Ltd Air guns and ammunition for air guns
GB2153983A (en) * 1982-02-27 1985-08-29 Hilvenna Ltd Ammunition for air guns
US4531458A (en) * 1982-07-29 1985-07-30 Hilvenna Limited Compressed gas powered ammunition for small arms
GB2154714A (en) * 1984-02-14 1985-09-11 Hilvenna Ltd Cartridge ammunition for small arms
EP0189974A2 (en) * 1985-01-11 1986-08-06 Brocock Limited Improvements in or relating to compressed gas powered ammunition for guns
GB2211588A (en) * 1987-10-23 1989-07-05 Bubb Anthony John Allen Air guns
US5492063A (en) * 1990-03-22 1996-02-20 Snc Industrial Technologies Inc. Reduced energy cartridge
EP0499332A1 (en) * 1991-02-14 1992-08-19 Proprietaries Ltd. Stylobate A pressurized gas cartridge ammunition

Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5962805A (en) * 1993-08-16 1999-10-05 Constantia (International) Limited Gas cartridge
US6095051A (en) * 1998-08-13 2000-08-01 Saxby; Michael Ernest Self loading gun cartridge
WO2000009965A1 (en) * 1998-08-13 2000-02-24 Lambeth Properties Limited Self loading gun cartridge
US6427600B2 (en) 1998-09-14 2002-08-06 Michael Ernest Saxby Blank cartridge for self loading guns
WO2000016032A1 (en) * 1998-09-14 2000-03-23 Lambeth Properties Limited Blank cartridge for self loading guns
WO2001016550A1 (en) * 1999-08-27 2001-03-08 Lambeth Properties Limited Training cartridge for a self loading gun
US6422149B1 (en) * 1999-08-27 2002-07-23 Lambath Properties Limited Blank training cartridge for a self loading gun
US20100170492A1 (en) * 2000-04-03 2010-07-08 Tiberius Benjamin T Semi-automatic firing compressed-gas gun
US7784454B2 (en) * 2000-04-03 2010-08-31 Tiberius Benjamin T Semi-automatic firing compressed-gas gun
US6860207B1 (en) * 2003-08-22 2005-03-01 Thomas W. Robertson Compressible shot shell
US20050257783A1 (en) * 2004-05-19 2005-11-24 Tippmann Dennis J Jr Valve arrangement
US20070017406A1 (en) * 2004-05-19 2007-01-25 Tippmann Dennis J Jr Valve arrangement
US20060011184A1 (en) * 2004-06-18 2006-01-19 Npf Limited Air balanced exhaust poppet valve with bias closure
US7059316B1 (en) * 2005-03-08 2006-06-13 Jui-Fu Tseng Paintball shooting structure for a paintball gun
US20090194087A1 (en) * 2008-02-04 2009-08-06 Hsin-Hung Lin High-pressure pneumatic apparatus
US7712464B2 (en) * 2008-06-04 2010-05-11 Yao-Gwo Gan Valve for paint ball guns
US20090301459A1 (en) * 2008-06-04 2009-12-10 Yao-Gwo Gan Valve for paint ball guns
US20120304975A1 (en) * 2011-05-30 2012-12-06 Chor-Ming Ma Toy Gun Compressed Air Firing Shell
US8448632B2 (en) * 2011-05-30 2013-05-28 Buzz Bee Toys (H.K.) Co., Limited Toy gun compressed air firing shell
US8256406B1 (en) * 2011-06-01 2012-09-04 Kevin Kirkpatrick Systems and methods for regulating pneumatic gas propulsion
US8365669B1 (en) * 2011-08-24 2013-02-05 Utm Ip Limited Training cartridge
US8763596B2 (en) * 2012-03-01 2014-07-01 Aps Ltd. Cartridge for launching a bullet
US9420778B1 (en) 2013-09-30 2016-08-23 Tiberius Technology, Llc Noise-making apparatus and method
US20150241165A1 (en) * 2014-02-21 2015-08-27 Air Ordnance Llc Fluid cartridge powered pellet gun
US9700779B1 (en) * 2016-08-15 2017-07-11 Jose Leal Football throwing apparatus
US11262156B2 (en) * 2019-06-17 2022-03-01 Carl E Caudle Air gun for conventional metal-jacket bullets
US20220146238A1 (en) * 2020-11-12 2022-05-12 General Dynamics OTS - Canada, Inc. Reduced-energy cartridge with exterior sealing member for fluted chamber
US11656063B2 (en) * 2020-11-12 2023-05-23 General Dynamics OTS—Canada, Inc. Reduced-energy cartridge with exterior sealing member for fluted chamber

Also Published As

Publication number Publication date
CA2169565C (en) 1998-09-01
GB2281118B (en) 1997-06-18
ZA946159B (en) 1995-03-29
DE69421295D1 (de) 1999-11-25
CN1132553A (zh) 1996-10-02
JPH10503275A (ja) 1998-03-24
WO1995005573A1 (en) 1995-02-23
AU7388294A (en) 1995-03-14
CN1043925C (zh) 1999-06-30
EP0775288A1 (en) 1997-05-28
ATE185898T1 (de) 1999-11-15
RU2134399C1 (ru) 1999-08-10
ES2137374T3 (es) 1999-12-16
DE69421295T2 (de) 2000-04-13
AU682708B2 (en) 1997-10-16
US5962805A (en) 1999-10-05
CA2169565A1 (en) 1995-02-23
EP0775288B1 (en) 1999-10-20
HK1012701A1 (en) 1999-08-06
GB2281118A (en) 1995-02-22
GR3031576T3 (en) 2000-01-31
GB9317040D0 (en) 1993-09-29

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